Replacement Laptop Battery for IBM Lenovo ThinkPad X201 Tablet Type 0831, 4800mAh 8-Cell Li-ion Non-OEM Samsung/LG Manufactured Cell Battery 14.8V 4800mAh 8 Cell Replacement Part Number: 43R9257, 43R9256, 42T4564, 42T4565, 42T4658 high performance replacement batteries for your laptop. Battery is 100% compatible with your laptop. The battery is designed to meet or exceed the original battery of your laptop.